Method: Choose a header image, selected from existing uploaded and default headers, or provide an array of uploaded header data (either new, or from media library).

Method: Remove a header image.

Method: Reset a header image to the default image for the theme.

Method: Calculate width and height based on what the currently selected theme supports.

Method: Create an attachment ‘object’.

Method: Insert an attachment and its metadata.

Method: Gets attachment uploaded by Media Manager, crops it, then saves it as a new object. Returns JSON-encoded object details.

Method: Display second step of custom header image page.